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Reference type: Conference Proceeding
Authors: Wang JS, Peng RT, Yang JH, He QH, Liu YJ
Publication date: 2011
Article title: Selective Adsorption of Uranium(VI) on U(VI) Ion-Imprinted Chitosan Composite Magnetic Microsphers.
Page numbers: 1714-1717
DOI: 10.1109/CDCIEM.2011.296 Alternative URL: http://www.computer.org/portal/web/csdl/doi/10.1109/CDCIEM.2011.296

Publisher: IEEE computer society
ISBN: 978-0-7695-4350-5
Conference information: Proceedings of the 2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring

Abstract: To find an effective method for uranium(VI)adsorption, uranium(VI) ion-imprinted chitosan composite magnetic micros hers (U(VI)¨CICCMM) were synthesized using uranium(VI) as template, chitosan as functional monomer, epichlorohydrin and glutaral dehyde as cross linking agents. Magnetic chitosan micro sphers (MCM) were synthesized without U(VI) ion-imprinted as control. Experiments were conducted in a batch system. As compared with MCM, the adsorption capacity of U(VI)-ICCMM increased 8.6mg g-1 in 30 minutes at pH 3.5 when the initial concentration of U(VI) was 100 mg l-1, and the percentage removal of U(VI) by U(VI)¨CICCMM can reached 99.71%when the dosage of the adsorbent was 5.0 g l-1. Competitive adsorption of multi-ions studies indicated that U(VI)-ICCMM had a high single selectivity for U(VI). The order of metal ion affinity in the competitive conditions was U(VI) > Cr(VI) >Mn(II) > Ca(II). The experimental results showed that U(VI)-ICCMM was an effective adsorbent to adsorb U(VI), and it can be separated in a convenient way under a magnetic field, moreover, it could be reused in an easy way and the adsorption capacity of U(VI)-ICCMM didn't decrease clearly even after six times regeneration.
Template and target information: Uranium ion, U(VI)


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